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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 03-19-2009   #1 (permalink)
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Default 390 FE or FT in a 1967?

I have a 390 out of a '72 truck and they are referred to as an FT (ford-truck, meant for trucks).
Are they basically the same as an FE (ford-edsel, meant for cars) motor?
Will the FT fit in the 67 Mustang like the FE?

Anyone know that the differences are?
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Unread 03-19-2009   #2 (permalink)
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ALL 390's are FE's. the 360's and others are known as FTs.and the 390 will fit in a '67...........................since they were optioned w/ the 390..just need the right motor mounts,etc.
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Unread 03-19-2009   #3 (permalink)
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yep i have a 64 t-bird with a 390 and i have never heard them referred to as ft's and i have seen a couple stangs with the 390... personally i love my 289 waaaaaaaay better than that big old 390 but if you want big cubes and you have the block then go for it cause i know they fit
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Unread 03-20-2009   #4 (permalink)
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FT's are good for low speed applications like trucks. If I were you and I had a choice, I'd go with an FE 390. FE's were made for passenger cars and definitely more suitable for a Mustang. There is worlds difference in performance. There are no aftermarket parts for the FT. Parts are not interchangeable between FT's and FE's. FT's are low compression, low performance motors. They towed stuff pretty good though. A '72 FT is all done by 3800 RPM. To answer your question, yes it will fit, but the performance will suck, to say the least. One book I recommend you reading to learn more about the difference between an FT and FE is How To Rebuild Big Block Ford Engines by Steve Christ. Very good book. You can buy it for less than $20 on Amazon.com.
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Last edited by Mgino757; 03-20-2009 at 02:15 AM. Reason: more details......
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Unread 03-20-2009   #5 (permalink)
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By the time you modify the FT to perform worth a crap, you could have bought two FE's.
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1996 Thunderbird LX stock 4.6L V8. MAC cold air. 225/60/15 BFG g-Force Sport V-rated. J-moded 4r70W. 172 rwhp 240 rwtq
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Unread 03-20-2009   #6 (permalink)
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There is one issue that I'd like to mention. The exhaust manifold bolt pattern is different on the non-Mustang 390 FE and FTs. You will have to have the heads with the correct bolt pattern to install the exhaust manifolds or headers that fit the Mustang. This may apply to the FEs that went into the Fairlane and Comets, too.

I'm not sure of this, but I believe that the heads can't be modified to accept the Mustang manifolds because the casting doesn't have enough material to drill and tap the bolt holes for them.
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Unread 03-20-2009   #7 (permalink)
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I believe Edelbrock's FE heads have both bolt patterns drilled. The Fairlane and the Mustang of the same year are pretty much the same car. The only thing that is different between the two is the interior and the sheet metal.
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Unread 03-20-2009   #8 (permalink)
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How can you tell the difference from an FE and FT?
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Unread 03-20-2009   #9 (permalink)
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The FE family consists of the following engines: 352, 360, 390, 406, 410, 427, 428.

Being part of the same family, their parts are interchangeable. To make ANY engine perform, you need quality parts; crank, rods, pistons, cam, heads, intake...

Your FT engine block will fit in your Mustang. To get it to perform, you will need better heads, cam, intake, and carb for your application. The block has nothing to do with how the overall engine performs other than how much power it can handle.
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Unread 03-20-2009   #10 (permalink)
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To clarify a bit, I also think there were 331, 361, and 391 versions but I am not for sure. There are some differences in crankshafts and journals as well as flywheels, balancers, and how the engine was balanced (internally vs. externally). I think the FT engines had desireable cranks if memory serves me, they were built for longevity.

If you are just wanting to get this motor, drop it in and drive away, you'd be better off finding an FE out of a passenger car. If you are planning on rebuilding it, you should be ok, just be sure to get the heads with the proper bolt pattern for the exhaust.
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Unread 03-21-2009   #11 (permalink)
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The crank from a FT will need to be machined to fit in a FE.
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Unread 03-21-2009   #12 (permalink)
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Is the engine out of a F100-F350? Or a larger truck F450 on up? The larger trucks used the FT, but pickups used the same FE engine as the passenger cars. Check the casting numbers on the block to be sure.
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